Grass comjecting device for



Dec. 31, 1935. v. TIRIMACCO 2,026,291

GRASS COLLECTING DEVICE FOR LAWN MOWERS Filed Feb. 14, 1934 4 Sheets-Sheet l 7 3 l z'lic'en o 72'" 17714 600 INVENTOR ATTO RN EY Dec. 31/, 1935. v. TIRIMACCO 2,026,291

GRASS COLLECTING DEVICE FOR LAWN MOWERS Filed Feb. 14, 1954 4 Sheets-Shet 2 INVENTOR ATTORNEY Dec. 31, 1935. v T|R|MAQ 2,026,291

GRASS COLLECTING DEVICE FOR LAWN MOWEBS Filed Feb. 14,1934 4 Sheets-Sheet 4 lNVENTOR ATTOR N EY Patented Dec. 31, 1935 UNITED STATES PATENT OF F ICE .GRASS COLLECTING DEVICE .FOR LAWN MOWERS 1 Claim.

This invention relates to lawn mowers and has for the primary object the provision of a device of the above stated character which is of the power driven type having an air exhausting means for collecting the grass severed by the cutting mechanism and which may be easily and quickly emptied when necessary.

With these and other objects in view this invention consists in certain novel features of construction, combination and arrangement of parts to be hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be hadto the following description and accompanying drawings, in which Figure 1 is a front elevation illustrating a lawn mower equipped with a grass collecting device constructed in accordance with my invention.

Figure 2 is a fragmentary top plan view illustrating the same.

Figure 3 is a sectional view taken on the line 3-3 of Figure 2.

Figure 4 is a similar view looking in an opposite direction from that shown in Figure 3.

Figure 5 is a fragmentary plan view illustrating the driving means for the movable cutter blade.

Figure 6 is an enlarged fragmentary sectional view showing the grass collecting hood which is associated with the cutting mechanism.

Referring in detail to the drawings, the numeral I indicates a main frame carrying an axle 2 on which are journaled ground wheels 3. A handle 4 of tubular formation is secured to the frame I by braces 5 and carries at its free end hand grips 6. Extending forwardly and downwardly from the main frame are arms 1 connected by a head or bar 8 on which is mounted a nonmovable cutter blade 9. A movable cutter blade I is mounted to the non-movable cutter blade 9 for reciprocation and its rear or non-cutting edge is formed to provide rack teeth ll meshing with a segmental rack l2 pivoted to the bar 8. An angularly disposed arm I 3 is integral with the segmental rack l2 and has pivotally connected thereto a pitman [4 which is in turn pivoted to a crank pin I secured to a shaft l6 driven by an electric motor I! mounted upon the main frame I. A fan casing I8 is supported upon the main frame I by a sub-structure l9 and is arranged in alignment with one of the ground wheels. Operating within the casing I8 is a fan 20 secured to a shaft 2 l, the latter being journaled in bearings carried by the sub-structure. The shaft 2| is connected to the shaft I6 by sprocket gears and sprocket chains, as shown at 22. The fan is driven by the electric motor I1 and forces tachable coupling 25.

air through an outlet pipe 23, the latter having connection with a collecting hood 24 by a de- The hood 24 is suitably supported by the arms 7 with its mouth 26 arranged adjacent to the cutter bars. The hood 24 is divided into inner and outer chambers 21 and 28. The outer chamber is communicative with the neck 29, the latter being connected to the air supply pipe 23. The inner chamber 21 has an outlet neck 30 connected to a collecting bag 3|, the latter being supported by an arm 32 mounted to the main frame. The bag 3| is detaohably connected to the outlet neck 30 as shown at 30 and is of a conventional construction frequently found used in connection with vacuum cleaners and similar devices being provided with a cover 33 so that the bag may be emptied of its contents whenever necessary. The hood 24 extends the full width of the cutter bars and the walls of the outer chamber of said hood where the mouth of the latter is formed extend inwardly and spaced from the walls of the inner chamber so as to admit air from the outer chamber to the inner chamber adjacent to the mouth of the hood and rearwardly and above the cutter bars. The air entering the inner chamber passes rearwardly and into the collecting bag by way of the neck so that the grass severed by the cutter bars will be drawn rearwardly and deposited into the bag. The lower wall of the inner compartment is provided with a series of apertures 34 to admit air from the outer compartment to the inner compartment and aid in driving the severed grass rearwardly to the collecting bag. The inner and outer chambers are also in communication with 35 each other by ports 35 located adjacent the neck 30 so that air from the outer compartment will be directed into the inner compartment at the formation of the latter with the neck 30 further aiding in driving the severed grass to the collecting bag. V

A lubricant reservoir 36 is mounted on the main frame and has connected thereto a series of pipes 31 leading to the cutter bars for the purpose of lubricating the latter. Also additional pipes may be provided from the reservoir to other moving parts of the motor.

The braces 5 which secure the handle to the main frame are pivotally connected to the latter 1935. P. F. VAN DER GRINTEN 2,026,292

COPYING OF OPAQUE ORIGINALS BY CONTACT PRINTING Filed Sept. 9, 1935 2 Sheets-Sheet 1 l I 1 FIG 1 1 [ill azimlfiil hiakr 402271212 Zia/way 

